Five-minute oscillations in the solar magnetic field.

Evidence for the existence of 5 min oscillations in the photospheric and low chromospheric magnetic fields is presented, their properties discussed, and a possible production mechanism suggested. It is pointed out that, because the solar magnetic field is frozen into the oscillating plasma, there are several ways in which the oscillations in the plasma (which are observed as velocity oscillations) could be transferred to the magnetic field. It is shown schematically how vertical waves could cause oscillations in a horizontal magnetic field, and how horizontal waves could cause oscillations in a vertical magnetic field.